January Weather in Mount Isa, Australia

Last updated: February 25, 2025

In January, Mount Isa experiences a hot and arid climate, characterized by soaring temperatures that can reach a maximum of 43°C (110°F), with an average of 31°C (88°F) and a minimum of 22°C (72°F). Despite the heat, the region sees some relief with approximately 55 mm (2.1 in) of rainfall spread over 6 days, contributing to a humidity level of 56%. This combination of high temperatures and sporadic rain creates a unique weather experience for residents and visitors alike, highlighting the stark contrasts of life in the vibrant and sun-drenched landscapes of northern Australia.

January Temperature in Mount Isa

In Mount Isa, Australia, January sizzles with temperatures that showcase the true essence of summer. The month typically starts with a minimum of 22°C (72°F), escalating to an average of 31°C (88°F) and peaking at a scorching 43°C (110°F). This trend of high temperatures sets the tone for the following month, February, which sees slight cooling with a minimum of 18°C (65°F) and a peak of 42°C (107°F), while sustaining an average of 30°C (86°F). As summer transitions into autumn through March, the temperatures remain warm yet begin to gradually decline, with daily maximums finally dipping below 40°C by April. Notably, the pattern showcases a significant drop in temperatures in the subsequent months, leading to more temperate weather by June and beyond, making Mount Isa's January a vibrant peak of summer heat before the seasonal shift occurs.

January Weather in Mount Isa: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mount Isa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec888584797064646775828590
Data source: Temperature data for Mount Isa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mount Isa

In January, Mount Isa experiences a modest rainfall of 55 mm (2.1 in) over the course of six days, marking the month as one of the wetter periods in the year. This early summer precipitation sets the tone for the following month, where rain increases significantly to 85 mm (3.4 in) in February and peaks at 87 mm (3.4 in) in March. As the season progresses, however, the region transitions into a pronounced dry spell, with April and May seeing virtually no rain at all. The stark contrast between the wet start of the year and the subsequent dry months, as reflected in the sharp decline of precipitation to a mere 1 mm in the following months, highlights the extreme variability of Mount Isa's climate. The precipitation pattern suggests a short-lived wet season, quickly giving way to the arid conditions that define much of the year.

January Precipitation Trends in Mount Isa

The chart displays monthly precipitation patterns in Mount Isa, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec558587116105101820
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Mount Isa

In January, Mount Isa experiences a humidity level of 56%, setting the stage for the warmer months ahead. As the year progresses into February and March, humidity rises to 62% and peaks at 71%, creating a sticky atmosphere typical of the Australian summer. Following this peak, there is a notable drop in humidity starting in April with 53%, and this decline continues throughout the cooler months, reaching a low of just 23% in October. The trend illustrates a distinct seasonal shift, with the dry atmosphere persisting through late spring and into early summer, before gradually increasing humidity levels return in November and December, closing the year on a more humid note at 47%. This cycle reflects Mount Isa's dynamic climate, contrasting the sweltering summers with its arid winters.

January Average Humidity in Mount Isa

This chart illustrates the average monthly humidity levels in Mount Isa, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec56%62%71%53%47%47%42%43%33%23%28%47%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mount Isa

In January, Mount Isa experiences an alarming UV Index of 17, categorized as extreme, which means the risk for harm from unprotected sun exposure is very high, with a burn time of just 10 minutes. This intense level of solar radiation is consistent through the early months of the year, with February and March following closely behind with UV Index readings of 16 and 15, respectively. As the year progresses, the UV Index gradually drops, but it remains elevated with extreme ratings until April. By May, the index decreases to 9, transitioning to a very high exposure category and allowing for slightly longer burn times. Notably, the trend reflects a seasonal pattern where the risk remains significant, especially in the first half of the year. For those planning outdoor activities, understanding this UV Index is crucial for sun safety; for more details, visit Mount Isa UV Index.

Maximum UV Index Levels in Mount Isa for January

The chart shows the monthly maximum UV Index (UVI) for Mount Isa in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec171615129781113141616
Data source: Mount Isa January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Mount Isa

In January, Mount Isa basks in 269 hours of sunshine, setting the stage for a bright year ahead. As the summer transitions into February, daylight shines even more intensely with 284 hours recorded, nudging upward to 305 hours come March. The trend of increasing sunshine continues into April and May, albeit with slight fluctuations, before peaking in the latter half of the year. From July through December, Mount Isa witnesses a remarkable ascent, culminating in a dazzling 342 hours of sunshine in December. This clear pattern reveals not only the warmth of the Australian sun but also the promise of longer, brighter days as the year unfolds.

Monthly Sunshine Duration in Mount Isa: January Highlighted

The January sunshine duration represents the total number of hours Mount Isa experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec269h284h305h298h289h276h293h308h314h330h329h342h
Data source: Mount Isa January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mount Isa During January

In Mount Isa, Australia, January offers a moderate chance of sunny weather, with only 49% of the days expected to bask in sunshine. This marks the start of a gradual upward trend, as the likelihood of sunny days increases significantly in the following months. By February, the sun’s presence rises to 56%, and further climbs to 63% in March. The real turning point occurs in April, where the chance of clear, sunny skies leaps to a striking 83%, continuing its upward trajectory into the winter months, peaking in August with an impressive 90%. Such patterns highlight not only the vibrant sun-filled days that await but also the seasonal charm that makes Mount Isa a delightful destination as summer transitions into autumn.

Percentage of Sunny Days in January in Mount Isa

The chart illustrates the percentage of sunny days in Mount Isa throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Mount Isa experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%56%63%83%85%65%87%91%79%70%68%62%
Data source: Mount Isa January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mount Isa in January

In Mount Isa, Australia, January shines with 13 hours of daylight, marking the peak of sun-soaked days that characterize the summer season. As the year progresses into February and March, daylight remains steady at 12 hours, offering plenty of time for outdoor activities. However, the gradual shift into April and May sees a reduction to 11 hours, signaling the onset of autumn. This trend continues into the winter months of June and July, where the daylight dips further to a cozy 10 hours. Come August and September, the days lengthen again, returning to 11 hours, before climbing back to 12 hours in October. The year rounds off with the longest days in November and December, each boasting 13 hours of daylight, ensuring that the warm, sunny season lingers just a little longer in this vibrant Australian town.

Average Daylight Hours in Mount Isa for January

The chart illustrates the variation in daylight duration in Mount Isa throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 13m12h 45m12h 11m11h 35m11h 6m10h 52m10h 59m11h 24m11h 58m12h 33m13h 5m13h 21m
Data source: Mount Isa daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Mount Isa

In Mount Isa, January ushers in a gentle breeze with an average wind speed of 4.4 m/s (10 mph), setting the tone for the summer months. As the year progresses into February, the wind slightly calms to 4.1 m/s (9 mph), but it soon picks up momentum again in March, reaching 4.7 m/s (10 mph). April and May mark a peak in wind activity, both averaging 5.3 m/s (12 mph), offering a refreshing contrast to the heat. The winds stabilize somewhat during the cooler months of June and July, returning to 4.6 m/s (10 mph), before rising again in August and peaking in September at 5.4 m/s (12 mph). As the year winds down, conditions become more variable, with October dropping to 3.9 m/s (9 mph) and November slightly recovering to 4.5 m/s (10 mph). By December, the breeze softens once again to 4.0 m/s (9 mph), providing a calm close to the year, reflecting an overall pattern of increasing winds through the middle months and a gentle tapering off toward the end.

Average January Wind Speed in Mount Isa

The chart displays monthly wind speed patterns in Mount Isa, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.4 m/s4.14.75.35.34.64.65.05.43.94.54.0
Data source: Mount Isa January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Mount Isa Compares to Other Months

The weather in Mount Isa changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Mount Isa and find detailed weather information for every month.

In January, the weather in Mount Isa is typically hot, with minimum temperatures around 22°C (72°F) and maximums reaching up to 43°C (110°F). The average temperature hovers around 31°C (88°F), complemented by moderate humidity levels of 56%. In contrast, February sees a slight dip in both minimum and average temperatures, with a minimum of 18°C (65°F) and an average of 30°C (86°F). However, it compensates for this with increased precipitation, totaling 85 mm (3.4 in) over six days, accompanied by a higher humidity level of 62%. This shift in weather patterns makes February somewhat more humid and wetter compared to January, adding a different element to the climate. For more detailed information, you can check Mount Isa weather in February.

In January, Mount Isa experiences warmer temperatures, with a minimum of 22°C (72°F) and an average high of 43°C (110°F), while March sees slightly cooler temperatures, with a minimum of 18°C (66°F) and an average high of 41°C (106°F). Precipitation levels increase in March, totaling 87 mm (3.4 in) over 6 days compared to January's 55 mm (2.1 in). Additionally, humidity rises in March to 71%, up from 56% in January, contributing to a more humid atmosphere. For more detailed insights on the weather during this month, you can check Mount Isa weather in March.

In January, the weather in Mount Isa features much warmer temperatures, with a minimum of 22°C (72°F) and an average high reaching a scorching 43°C (110°F). The month also experiences some humidity at 56% and a total precipitation of 55 mm (2.1 in) over six days. In contrast, April offers a much cooler climate, with temperatures dropping to a minimum of 11°C (51°F) and an average high of 37°C (99°F). Notably, April is characterized by minimal precipitation, recording just 1 mm (0.0 in) and experiencing no rainy days, along with slightly lower humidity at 53%. For more details about the weather in this month, check out Mount Isa weather in April.

In January, the weather is considerably hotter, with minimum temperatures around 22°C (72°F) and maximums soaring to 43°C (110°F), leading to an average temperature of 31°C (88°F). The month also experiences more humidity at 56% and 55 mm (2.1 in) of precipitation over six rainy days. In stark contrast, May sees much cooler temperatures, with minimums dropping to 6°C (43°F) and averages of 21°C (70°F), peaking at 32°C (91°F). Rain is practically nonexistent in May, with only 1 mm (0.0 in) of precipitation and no rainy days, contributing to a lower humidity level of 47%. This makes May a much drier and cooler month overall. For more details, you can check Mount Isa weather in May.

In January, the weather in Mount Isa is characterized by significantly higher temperatures, with a minimum of 22°C (72°F) and an average of 31°C (88°F), peaking at a scorching 43°C (110°F). This month also experiences moderate rainfall, with 55 mm (2.1 in) of precipitation over about six days and humidity levels at 56%. In stark contrast, June brings much cooler conditions, featuring a minimum temperature of 4°C (40°F) and an average of 18°C (64°F), with maximums reaching 31°C (89°F). The winter month enjoys minimal precipitation, just 6 mm (0.2 in) with no rainy days and lower humidity at 47%. For more details on June weather patterns, check out Mount Isa weather in June.

In January, the weather in Mount Isa is characterized by significantly higher temperatures, with a minimum of 22°C (72°F) and an average of 31°C (88°F), peaking at a scorching 43°C (110°F). The month experiences around 55 mm (2.1 in) of precipitation over approximately six days, making it relatively humid at 56%. In stark contrast, July brings much cooler conditions, with temperatures ranging from a minimum of 4°C (40°F) to an average of 18°C (65°F) and a maximum of 33°C (91°F). Precipitation is virtually nonexistent, with only 1 mm (0.1 in) recorded on no rainy days, leading to lower humidity levels at 42%. For more details about July weather, visit Mount Isa weather in July.

January in Mount Isa is characterized by much warmer temperatures, with a minimum of 22°C (72°F) and maximum reaching up to 43°C (110°F), creating a sweltering atmosphere typical of summer. The month sees an average temperature of 31°C (88°F) and experiences moderate humidity at 56%, along with approximately 55 mm (2.1 in) of rainfall over 6 days. In stark contrast, August presents a cooler climate, with temperatures ranging from a low of 6°C (43°F) to a comfortable high of 34°C (94°F) and an average of 20°C (68°F). Notably, August is dry, with no recorded precipitation and a lower humidity level of 43%. For more details, you can visit Mount Isa weather in August.

The weather in January and September presents a stark contrast. January sees much higher temperatures, with a minimum of 22°C (72°F) and an average of 31°C (88°F), peaking at a scorching 43°C (110°F). It also experiences 55 mm of precipitation over approximately six days, resulting in a humidity level of 56%. In sharp contrast, September brings cooler temperatures, with a minimum of just 9°C (48°F) and an average of 24°C (75°F), reaching a maximum of 39°C (102°F). The month is relatively dry, with only 5 mm of precipitation on about one day and lower humidity at 32%. For more details on September weather, you can visit Mount Isa weather in September.

In January, temperatures in Mount Isa soar with minimums around 22°C (72°F) and maximums reaching up to 43°C (110°F), resulting in an average of 31°C (88°F). The month is characterized by higher humidity at 56% and considerable precipitation, totaling 55 mm (2.1 inches) over approximately 6 days. In contrast, October offers a more temperate climate, with minimum temperatures dropping to 15°C (58°F) and maximums peaking at 41°C (105°F), averaging 28°C (83°F). This month sees significantly lower humidity at 23% and only minimal rainfall of 10 mm (0.4 inches) across just 2 days, making it a much drier period. For more details, check out Mount Isa weather in October.

January and November in Mount Isa exhibit notable differences in weather patterns. January has a warmer temperature range, with minimums around 22°C (72°F), averaging 31°C (88°F), and soaring to maximums of 43°C (110°F). The month also experiences higher humidity at 56% and more rain, with 55 mm (2.1 in) of precipitation over approximately 6 days. In contrast, November's temperatures are milder, with minimums of 13°C (57°F), averaging 29°C (85°F), and maximums reaching 41°C (107°F). Precipitation drops significantly to 18 mm (0.7 in) across just 4 days, accompanied by lower humidity levels at 28%. For more detailed information, you can explore Mount Isa weather in November.

In comparing the weather of January and December, January tends to be slightly warmer overall, with average temperatures peaking at 31°C (88°F) compared to December's average of 32°C (90°F). The maximum temperature in January reaches 43°C (110°F), which is just shy of December's high of 44°C (111°F). However, January experiences more precipitation, with 55 mm (2.1 in) spread over 6 days, while December is drier, accumulating only 20 mm (0.8 in) over 3 days. Additionally, January has a higher humidity level at 56%, compared to December's 47%. For a more detailed look at December conditions, visit Mount Isa weather in December.

Compare Mount Isa's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Mount Isa

January in Mount Isa presents a scorching contrast to other months, with maximum temperatures soaring to extreme highs, leading to an average warmth that embraces the summer season. The humidity levels hover around a comfortable 56%, making the heat feel more intense during the day. Although there's a slight chance of rain with about six days of precipitation, this adds a refreshing break to the otherwise dry heat typical of the region. For more detailed insights on Mount Isa's weather patterns, check out Mount Isa Climate.